body {
    max-width: 750px;
    margin: 0 auto;
}
@media screen and (min-width:750px) {
    html {
        font-size: 75px !important;
    }
}
.lunbo {
    width: 100%;
    position: relative;
    overflow: hidden;
}
.lunbo .tupian {
    display: flex;
    margin-left: 0;
}
.lunbo .tupian img {
    width: 10rem;
}
.lunbo .dian {
    position: absolute;
    bottom: .133333rem;
    display: flex;
    left: .666667rem;
}
.lunbo .dian li {
    width: .133333rem;
    height: .2rem;
    background-color: white;
    margin-left: .266667rem;
    transition: all .3s;
}
.lunbo .dian li.teshu {
    width: .266667rem;
}